Brake-applying means.



W. KAYLOR.

BRAKE APPLYING MEANS.

APPLICATION FILED FEB. 2, I918,

1,288,42%D Patented Dec.17,1918.

2 SHEETS-SHEET 1.

EL n I! ll W. KAYLOR.

BRAKE APPLYING MEANS.

APPLICATION FILED FEB. 2,1918.

1 288,424: Patented Dec. 17', 1918.

2 SHEETS-SHEET 2.

3 1 t we so UNITD STATES FATET FFTCQ WILLIAM KAYLOR, OF MUSKOGEE, OKLAHOMA, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF ONE-HALF TO HENRY DROST AND ONE-HALF TO J. A. ECHLIN,

BOTH OF MUSKOGEE, OKLAHOMA.

BRAKE-APPLYIN G MEANS.

Application filed February 2, 1918.

T 0 all whom it may concern:

Be it known that I, WILLIAM KAYLOR, a citizen of the United States, residing at Muskogee, in the county of Muskogee and State of Oklahoma, have invented certain new and useful Improvements in Brake- Applying Means; and I do declare the fol lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains, to make and use the same;

The object of my invention is to provide a simple, strong and powerful brake applying means for electric railway cars and other vehicles which may well be operated by hand without excessive turning of a handle or wheel, and with this general object in view, the invention resides in the novel features of construction and unique combinations of parts herein described and claimed and shown in the accompanying drawings in which:

Figure 1 is a side elevation of an electric car equipped with the invention, parts being broken away and in section;

Fig. 2 is a horizontal section on the plane of line 22 of Fig. 1 showing substantially the normal positions of parts;

Fig. 3 is a duplicate of Fig. 2 with the exception that it discloses the relative positions of parts when the brakes are applied;

Fig. 4 is an enlarged side elevation;

Fig. 5 is a longitudinal section on the plane of line 55 of Fig. 2;

Fig. 6 is a perspective view of the supporting plate; and

Fig. 7 is a disassembled perspective view of the slide.

In the drawings above briefly described, the numeral 1 designates the frame of a car, 2 has reference to the wheels thereof, 3 indicates the usual spring-released brake shoes, 4 a rod or cable for applying said shoes, and 5 a preferably vertical shaft having a crank or other suitable handle 6, the latter being located accessibly to the motorman. Heretofore, a chain has in most cases been wound upon the lower end of shaft 5 for operating a complicated system of levers to apply the shoes 3 to the wheels, but due to the nature of the present invention, the chain and perhaps the lever may be eliminated, thus greatly simplifying the brake applying means and obviating the neces- Specification of Letters Patent.

Patented Dec. 17, 1918.

Serial No. 215,174.

sity of excessive turning of the shaft to apply and release the brakes.

The device consists essentially of a pull member 10 to which the rod or cable i is connected, and a cam 11 on the lower end of shaft 5 for shifting said pull member to apply the brake shoes through the instrumentality of the rod or cable 4, together with a support 12 for said pull member and means for so moving said member as to maintain it in proper relation with the cam as the latter performs its function.

The pull member 10 is in the form of a slide resting on the support 12 and the latter is shown in the form of a horizontal plate having arms 13 extending upwardly to and secured to the frame 1, said plate having a socket 14 rotatably receiving the lower extremity of the shaft 5. This shaft passes through slots 15 in upper and lower plates 16, said plates and a pair of spacing blocks 17 between them forming the slide or pull member 10. One spacing block 17 is located at the front end of the slide and is provided in its rear edge with vertical seats 18 for a pair of rollers 19 against which the cam 11 bears, said cam being located in the opening 20 of the slide formed between the plates 16 and the block 17.

The edge of cam 11 increases its distance from shaft 5 from its front to its rear end and in order that said edge may contact properly with the rollers 19 regardless of the amount to which the slide 10 is shifted, it is necessary to move said slide laterally as it moves forwardly, that is after it has moved a sufiicient distance to remove all slack from the rod or cable 1 and to bring the shoes 3 against the wheels 2. For so moving the slide the rear end of the slots 15 are turned laterally as seen at 15 and another slot 21 shaped similarly to the slots 15 is formed in the bottom plate 16 of said slide, said slot receiving a lug 22 rising from the plate 12. This lug 22 and slot 21 not only assist in moving the slide laterally as it is shifted forwardly by the cam, but they coact with the slots 15 and shaft 5 in preventing possible canting of the slide.

Preferably though not necessarily, the upper plate 16 is formed with a slot 28 above slot 21, permitting access to lug 22 for lubrication, etc. Also, although it may in some cases be eliminated, a stop nose 24 is preferably formed on the cam 11 to prevent possible complete rotation thereof.

B the construction described and shown,

a partial turn of shaft 5 will apply the is insured by the slots 15 and 21 and the coacting parts. The invention may be usedv on numerous kinds of machines and within the scope of the appended claims, minor changes may well be made as occasion may demand.

I claim:

1. Brake operating means comprising a pull member having an opening and a slot communicating therewith and extending longitudinally of the line of movement of said. pull member, a shaft extending into said opening through said slot, and a cam on said shaft located in said opening for shifting said pull member upon turning of said shaft.

2'. Brake operating means comprislng a pull member having thrust means, a rotary cam engaging said thrust. means, and means for shifting said pull member laterally as said cam is turned toshift said member longitudinally, whereby to maintain said cam and said thrust means in proper relation.

3. A structure as specified in claim 2, said lateral shifting means comprising a substan tia'lly oblique slot in said pull member, and a relatively fixed member extending into said slot.

4. Brake operating means comprising a slide having front and rear substantially oblique slots and also having thrust means,

a shaft at right angles to said slide and 4C passing through one of said slots, a cam on said shaft engaging said thrust means for moving said slide longitudinally, and a relatively fixed member extending into the other slot of said slide.

A structure as specified in claim at, said Slide having an opening in which said cam is located and said thrust means being located at one end of said opening.

6.. A structure as specified in claim 5, to-' gether With a support on which said slide rests, said support carrying said relatively fixed member and having a bearing for said shaft.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WILLIAM KAYLOR.

Witnesses H.. G. WIPPERMAN, Jr., E. L. BAIL.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of Patents, Washington, Btu? 

